.alpha.,.alpha.'-Dicumyl 1889-67-4 2,3-Dimethyl-2,3-diphenylbutane Benzene, 1,1'-(1,1,2,2-tetramethyl-1,2-ethanediyl)bis- Bibenzyl, .alpha.,.alpha.,.alpha.',.alpha.'-tetramethyl- Butane, 2,3-dimethyl-2,3-diphenyl- Dicumene NSC34859